Colorado Income Tax Calculator 2026

Calculate your Colorado state income tax for 2026. Colorado has a flat 0.044% income tax rate.

$
Deduction

Federal Income Tax

$7,670.00

Effective Tax Rate

10.23%

Marginal Tax Rate

22%

FICA (SS + Medicare)

$5,737.50

Total Tax Burden

$13,407.50

After-Tax Income

$61,592.50

Tax Calculation Breakdown

Gross Income$75,000.00
Above-the-Line Deductions- $0.00
Adjusted Gross Income (AGI)$75,000.00
Standard Deduction- $16,100.00
Taxable Income$58,900.00
10% on $0.00 – $12,400.00$1,240.00
12% on $12,400.00 – $50,400.00$4,560.00
22% on $50,400.00 – $105,700.00$1,870.00
Federal Income Tax (before credits)$7,670.00
Federal Income Tax (after credits)$7,670.00
Social Security (6.2%)$4,650.00
Medicare (1.45%)$1,087.50
Total FICA$5,737.50
Total Tax$13,407.50
After-Tax Annual Income$61,592.50
Monthly Take-Home$5,132.71

Disclaimer: This calculator is for informational purposes only and does not constitute tax, financial, or legal advice. Results are estimates based on the information you provide and current rates. Always consult a qualified tax professional or financial advisor for advice specific to your situation.

Colorado Income Tax Overview

Colorado taxes income at a single flat rate of 4.4%, one of the simpler systems in the country. There are no brackets to climb: a teacher, a tradesperson, and a tech executive all face the same 4.4% on their Colorado taxable income. The starting point is your federal taxable income, which already reflects the federal standard deduction or itemized deductions, then Colorado applies a handful of state-specific additions and subtractions before the rate hits.

Most people who live in Colorado or earn money there owe this tax, including remote workers paid by out-of-state employers for work done in the state. The flat 4.4% sits on top of your federal income tax rather than replacing it, so your total income-tax burden is the federal amount plus the state amount. Colorado's standard deduction for single filers is $16,100, which lowers taxable income before the rate applies. Filing runs through the Colorado Department of Revenue, generally alongside your federal return, with refunds or balances trued up at year-end.

Colorado Income Tax Rate

0.044%

Flat rate — same for all income levels

Colorado Tax Snapshot

Sales Tax 0.029%
Avg. Property Tax 0.005%
Minimum Wage $15.16/hr

Official Sources:

Colorado Income Tax FAQ

What is Colorado's income tax rate for 2026?
Colorado uses a flat 4.4% rate on taxable income, with no graduated brackets. Whether you earn $40,000 or $400,000, the state rate on each dollar of Colorado taxable income is the same. This flat structure is why two people with very different salaries can share an identical state tax rate.
Does Colorado tax come on top of federal income tax?
Yes. The state's 4.4% is entirely separate from and additional to federal income tax, which still uses its own graduated brackets. You file a federal return with the IRS and a Colorado return with the state Department of Revenue, and your total income tax is the sum of both. Colorado generally begins from your federal taxable income, then applies its own adjustments.
Who has to file a Colorado income tax return?
Generally, Colorado residents and part-year residents must file, as must nonresidents who earn income from Colorado sources such as wages for work performed in the state or rental property located there. If your employer withheld Colorado tax, filing is also how you claim any refund. The Department of Revenue sets the income thresholds and form requirements each year.
How does the standard deduction work for Colorado taxes?
Because Colorado starts from federal taxable income, the deductions you take federally already flow through, and the state recognizes a standard deduction of $16,100 for single filers before the 4.4% rate is applied. Colorado then layers on its own subtractions, such as certain retirement income, that can further reduce the taxable amount. The flat rate applies only to what remains after these reductions.